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A kind of cu-hap-biochar composite material for adsorbing hydrogen sulfide and preparation method thereof

A composite material and biochar technology, which is applied in the field of air purification, can solve the problems of poor desulfurization effect and low sulfur adsorption capacity, and achieve the effects of saving costs, reducing environmental pollution, and improving the penetration adsorption sulfur capacity

Active Publication Date: 2022-04-15
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a Cu-HAP-biochar composite material for adsorbing hydrogen sulfide and its preparation method, which overcomes the traditional biochar material, which mainly uses physical adsorption, has low sulfur adsorption capacity and poor desulfurization effect. Shortcomings

Method used

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  • A kind of cu-hap-biochar composite material for adsorbing hydrogen sulfide and preparation method thereof
  • A kind of cu-hap-biochar composite material for adsorbing hydrogen sulfide and preparation method thereof
  • A kind of cu-hap-biochar composite material for adsorbing hydrogen sulfide and preparation method thereof

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Effect test

Embodiment 1

[0035] Such as figure 1 Shown, a kind of Cu-HAP-biochar composite material and preparation method thereof for adsorbing hydrogen sulfide comprise the steps:

[0036] A. Raw material pretreatment: choose pomelo peel as raw material, chop and dry.

[0037] B. Preparation of biochar by carbonization: Weigh 10g of raw material, put it into a high-temperature vacuum tube furnace, raise the temperature to 400°C at a rate of 10°C / min under nitrogen atmosphere, and then carbonize for 1 hour. Cool naturally to room temperature, take it out, and grind it through an 80-mesh sieve to obtain biochar.

[0038] C. Preparation of hydroxyapatite (HAP) precursor liquid: Weigh 0.28g CaO powder and put it into 100mL ultrapure water, sonicate in an ultrasonic reactor for 10min to obtain 0.05mol / L Ca(OH) 2 solution. Draw 0.205mL of 85% industrial phosphoric acid and dilute to 100mL to obtain 0.03mol / L H 3 PO 4 solution. 0.05mol / L of Ca(OH) 2 The solution was placed in a magnetic stirrer, and...

Embodiment 2

[0060] Such as figure 1 Shown, a kind of Cu-HAP-biochar composite material and preparation method thereof for adsorbing hydrogen sulfide comprise the steps:

[0061] A. Raw material pretreatment: choose corn stalks as raw material, chop and dry.

[0062] B. Preparation of biochar by carbonization: Weigh 10g of raw material, put it into a high-temperature vacuum tube furnace, raise the temperature to 400°C at a rate of 10°C / min in a nitrogen atmosphere, and then carbonize for 1 hour. Cool naturally to room temperature, take it out, and grind it through an 80-mesh sieve to obtain biochar.

[0063] C. Preparation of hydroxyapatite (HAP) precursor liquid: Weigh 0.28g CaO powder and put it into 100mL ultrapure water, sonicate in an ultrasonic reactor for 10min to obtain 0.05mol / L Ca(OH) 2 solution. Draw 0.205mL of 85% industrial phosphoric acid and dilute to 100ml to obtain 0.03mol / L H 3 PO 4 solution. 0.05mol / L of Ca(OH) 2 The solution was placed in a magnetic stirrer, and ...

Embodiment 3

[0069] Such as figure 1 Shown, a kind of Cu-HAP-biochar composite material and preparation method thereof for adsorbing hydrogen sulfide comprise the steps:

[0070] A. Raw material pretreatment: select sorghum straw as raw material, chop and dry.

[0071] B. Preparation of biochar by carbonization: Weigh 10g of raw material, put it into a high-temperature vacuum tube furnace, raise the temperature to 400°C at a rate of 10°C / min in a nitrogen atmosphere, and then carbonize for 1 hour. Cool naturally to room temperature, take it out, and grind it through an 80-mesh sieve to obtain biochar.

[0072] C. Preparation of hydroxyapatite (HAP) precursor liquid: Weigh 0.28g CaO powder and put it into 100mL ultrapure water, sonicate in an ultrasonic reactor for 10min to obtain 0.05mol / L Ca(OH) 2 solution. Draw 0.205mL of 85% industrial phosphoric acid and dilute to 100ml to obtain 0.03mol / L H 3 PO 4 solution. 0.05mol / L of Ca(OH) 2 The solution was placed in a magnetic stirrer, an...

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Abstract

The invention discloses a Cu-HAP-bio-char composite material for adsorbing hydrogen sulfide and a preparation method thereof; the preparation method comprises the following steps: (1) hydrothermally synthesizing HAP-bio-char: adding bio-char to HAP Precursor liquid, then carry out hydrothermal reaction, solid-liquid separation after reaction, solid phase washing, drying, to obtain HAP-biochar; (2) metal copper ion loading: soak HAP-biochar in copper (II) ion solution , solid-liquid separation after soaking, and solid-phase drying to obtain Cu‑HAP‑biochar composites. The Cu-HAP-bio-char composite material of the present invention overcomes the disadvantages of traditional bio-char materials, such as physical adsorption, low sulfur adsorption capacity, and poor desulfurization effect. Compared with the traditional metal-impregnated modified biochar material (Cu-biochar), the breakthrough adsorption sulfur capacity of the Cu-HAP-biochar composite can be increased by about 3-6 times.

Description

technical field [0001] The invention belongs to the field of air purification, and in particular relates to a Cu-HAP-biochar composite material for absorbing hydrogen sulfide and a preparation method thereof. Background technique [0002] Hydrogen sulfide is a colorless, highly toxic gas with the smell of rotten eggs. It is one of the odorous pollutants that cause ambient air pollution. It will not only stimulate the olfactory organs and cause discomfort, but also seriously endanger human health. The human respiratory system, circulatory system, digestive system, nervous system, and endocrine system will all be affected by hydrogen sulfide gas to varying degrees, causing discomfort in mild cases and death in severe cases. Low concentrations of hydrogen sulfide can irritate the eyes of personnel and cause respiratory symptoms, and chronic poisoning reactions will occur when exposed to it for a long time; the content reaches 30-40mg / m 3 When the concentration is high, it wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01D53/02B01D2257/304
Inventor 石德智马彩灵吕梦莹马靖元王海林童海航吉芳英
Owner CHONGQING UNIV